-90.74% is the change from 659 to 61
Calculation steps:
[( 61 - 659 ) ÷ 659] x 100 = -90.74%
Formula
Percentage change = [(61 - 659) / 659] x 100
Subtract the new number by the original number
61 - 659 = -598
-598 ÷ 659 = -0.9074355083459787
-0.9074355083459787 x 100 = -90.74%